[USN-4151-2] Python vulnerabilities

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[USN-4151-2] Python vulnerabilities

Leonidas S. Barbosa
Ubuntu Security Notice USN-4151-2
October 10, 2019

python2.7, python3.4 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM


Several security issues were fixed in Python.

Software Description:
- python2.7: An interactive high-level object-oriented language
- python3.4: An interactive high-level object-oriented language


USN-4151-1 fixed several vulnerabilities in Python. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

 It was discovered that Python incorrectly parsed certain email addresses. A
 remote attacker could possibly use this issue to trick Python applications
 into accepting email addresses that should be denied. (CVE-2019-16056)

 It was discovered that the Python documentation XML-RPC server incorrectly
 handled certain fields. A remote attacker could use this issue to execute a
 cross-site scripting (XSS) attack. (CVE-2019-16935)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.04 ESM:
  python2.7                       2.7.6-8ubuntu0.6+esm3
  python2.7-minimal               2.7.6-8ubuntu0.6+esm3
  python3.4                       3.4.3-1ubuntu1~14.04.7+esm4
  python3.4-minimal               3.4.3-1ubuntu1~14.04.7+esm4

Ubuntu 12.04 ESM:
  python2.7                       2.7.3-0ubuntu3.15
  python2.7-minimal               2.7.3-0ubuntu3.15

In general, a standard system update will make all the necessary changes.

  CVE-2019-16056, CVE-2019-16935

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